Gas-engine.



No. 895,155. PATENTBD AUG. 4, iena.

c. B URGBSS, Jn.

GAS ENGINE.

/' Y #APPLICATION ILED HOY. 1S, IS-i.

FGJ

3 SHEETS-S3522 L NVENTOR n 3V g, BYWQ VNC m. ATTORNEYS.

BATBNTED AUG. 4, 1908. G BURGBSS, J1. i

GAS ENGINE.

APPLICATIOH FILED NOV. 16, H1117.

3 SHEETS-SHEET I.

WITNESSES:

2, Arf, /WWWJ- ATBNTED AUG. 4, 1908.

C. BURGESS, Jn.

GAS ENGINE.

PPLIoMrox FILED Nov.1, 1907.

` 3 SHEBTSLSHBET 3.

VVITNESSES:

www im CHARLES BURGESSR., OF WENONA, ILLINOIS.

GAS-ENGINE.

Specification of Letters Patent.,

Patented Aug. 45" 1908.

Application led November 16, 1907. Serial No. 402,450.

T o all whom 'it may concern:

Beit known that .l CHARLES BUnGnss, Jr..

a citizen of the United States, residing :it

W'euona, in the county of l-Iershall and State "of Illinois, haveinvented certain new and useful Improvements in Gas Engines, of whichthe followingr is a specification.

The invention has reference to iinprove' ments in gas engines of thewell known fourcycle construction, the principal object being .toprovide an interna combustion engine comprising a cylinder and a pistontherein of the double acting or reciprocating. type in which the gasesare exploded at opposite ends of the piston, the pistou being hollow andhaving a port communicating with an opening through the cylinder walland the pistonl rod working free within a housing or tube which' forms acommunicating passage he# tween the crank chamber of the engine and theApistonwlierchy a continuous'cireuit of a cooling medium, such as air,may be' assed from the crank chamber around the lengt-h of thepiston-rod and within and around the 'piston and then discharged throughthe'cylinder wall, thereby preventing the overheating of the housing ortube, pistonend piston-rod, which overheating ol"A any of said partsfrequently renders gas en# gines of this type inoperative.

ln the accompanying drawings, Figure 1 is a vertical section of asingle-cylinder engine embodying my improvements. Fig. 2 is a verticalsection designed to show an airpuinp in combination with an engine. F 3is a. cross-section of a cylinder on the line 3--3 of Fig. 1, with partsremoved. Fig. 4 is an enlarged detailed section of the piston,'piston-guide and gland with parts hrokcn away and other parts insection.

Referring now more particularly to the drawings, 5 represents as a wholethe cylinder havdng the'usual outer casing G forming a water-jacket- 7and a crank ense S. Between the crank case 8 and the cylinder 5 issecured a guidecyli1nlerv 9 which is bolted to the crank case by meansof bolts 10 and its uper end engaging a circumferential boss 11 orincdon the outer casing 6. At each end of the cylinder 5 is an explosioncharnhcr 12 and 13 with the usual intake valves 14, 15, exhaust valves16, 1 7, caps 1S carrying the spark plugs 19 that. are secured totheintake side of the engine and the caps 20 carrying the pet-cocks 21 onthe exhaust side of the engine. The ducts 22 lead to the intake valves`for admitting the gaseous lmixture thereto and the duc ts 23 carry awaythe discharged gases, while 24 is the discharge port for theliquid inthe watenjacket.

Within the cylinder is a double-headedpiss ton 25 carrying the usualpiston rings 26 at both ends thereo,thc piston being hollow, except forthe. strengthening rods 27 each meeting at a point substantially'central' within the interior thereof to form an attaching pointv 2Q forthe. piston-rod 29. The pisto'n-rod is adapted to he secured to the saidattaching point by ineens of threads and to he secured more firmly b v`thebolt 30. Said piston-rod extends through one end of Said:

piston which is provided wit-h an annular opening having an annularthreaded boss 31- surrounding seid opening and u sliding tube 32 orconductor for a coodin? medium that is threaded :it one end :annifsadapted to engage;

outer casing 6, the usual pacln'n rings 34 being provided. It is to e unerstood that the tube 32 is hollow, one end opening into the piston andits other end into' the crank case. The piston is cored as shown at 35and a `series of ports 36 in the piston permit ail: coming through thetube 3.. to css out into the chamber 3T that is formed y the cylinderwall :ind the cored portion oi the piston.' The 4cylinder' wsdl isprovided' .with-'mie or more exhaust portions 3S whereby when the'piston is moved to bring any1 part' of the cored portionthereof-opposite the said ports,

-the nir within the chsrnber Will pass; outV through said ports A3S.

Sliding uit-hin the gende-cylinder is a crosshead 39 to which one end ofthe piston-rod is secured, and the connecting rod 40 is secured. to .thecrowhead by means of the wrist-pin The connecting rod is secured at itsY 41. outer .end tothe crank 42 towhich the'two- )artdrving shaft' 43end 43 are secured. l`o the driving shaft 43* is attached a.` gear 44that drives the gears 45 and 46 which Work I upon the stems 47 and 4S`of the exhaust and intake valve respectivelj', and the springs 49 areadapted to return said valves to theirf seats.

Referring to Fig. 2.. the gear 44 onshaft 43 j I drives the gear 46which in turn is connected by Ineens of e shaft to an air-pump andedischarge pipe lconnected to said air-puni conducts the air therefrominto the cran chamber and guirlecylinder 52 re resent-s u. balance Wheelconnected to the s mit 43.

operation air passes from the nir-pump into thecrank chamber and isforced from 'said crank chamber through the conductor or tube 32 intothe piston and around the seme intov the chamber 37 until said piston inits reciprocating movement brings the cored y eb ' orce said air upthrough seid tube 32.

,i portion opposite the apertures or. openings 38 -.whereupon the en'passes out through the' cylinder Well, it being understood that 'bymeans ofi m eir-pump'there is a constant ressure ofl air Within-thecrank chnmberitlo e object of forcing the air through the tube 32 istwo-fold.k First, it cools the gland 33, whereby an enf/ine of thepresent constructionA is provid `'mit-h je. gland through which thepiston-rod works that has twolrneens of' coolingA the seme, viz: theWater jacket sur- .a2-5 1 rounding seid gland end the --eir messingthrough seid tube. This gend 33 1s he por- -t-ion of the engine subgectto' the most friction and the moet nest. Secondly, the an" serves 'tocool the piston 1n th'ctrt basses mtonnd Y laround the seine, but teeprune-ry object of ftheinyention is to obteinnn e double'actih0'- a.crank and e. piston-rod1 e. conductor for a. v

'cooling medium surrounding said piston-rod,

one end 0i saidfconductor opening int-o said piston and the other endopening into said crank-chamber, and means for memtalmng e continuoussup ly oi e cooling medium'in seid crank-cham er, substantially -as described. 2. The combination With a. double acting engine cylinder formedwith one or more iat 55 i eral discharge ports for a coolin' mediumsubstantially centrally thereof, o a hollow piston in scid cylinderhaving lateralfopenmgs adapted to communicate With said diS- chargeports of the cylinder, e crank chamber, a. cra-nk, and u piston-rod, a.tube surrounding said ist'on-rod and connected at one end to sai pistonsind et its other end 'extending into said crank chamber, and

means for maintaining a.. continuous supply of a cooln medium in saidcrank chamber, substantial y as described. 3. TheA combination with adouble acting"- envine cylinder, formed `with one or more leteredischarge ports for a ,coolin substantially cent-rally thereof, or 'ehollow piston in said cylinder havinga cored portion and lateralopenings thereinto adapted to communicate with sind discharge ports ofthe cylinder, a, crank chamber, a. crank, and

e pston-rod, a tube surrounding seid pistonrod und connected at one endto seidv piston and at its other end extending into said crank chamber,and means ormeinteinng n. continuous supply of a cooling medium in seid4 "ank chamber, substantially es described.- l .l f

4. The-combination with a. double-noting cylinder having discharge portsfor a cooling medium, of e hollowpiston in said cylinder hevingopeningsedepted to' communicate with seid discharge orte, a crenlf chamber,

e crank, e iston-ro ende. conductor for a.

cooling me 'um surrounding' seid piston-rod one end of said conductoropening into sei piston and the other end opening into said clankchamber, substantially as described.

CHARLES kBURGESS. JR.

Witnesses:

'FREDERICK C. GoDWrN. JAMES, R, OFFIELD.

medium 70

